单词：gemmula congener congener
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45.The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Suns very center. It is here that is to be found the source of the energy that the Sun constantly pours out i
新概念优美背诵短文50篇
In a recent episode, you learned that adverbs do not always end in -ly, so perhaps you now think differently about adverbs. Wait a minute, though. Should we have said, Think different, as Apple does in its advertising slogan? Lets explore verbs and a
跟谢孟媛学语法
A: What classes have you taken so far? B: Ive been working on my GE classes. A: Is that all? B: Thats it for right now. A: What about your other classes? B: Im working towards transferring schools. A: Which classes have you finished already? B: Ive f
大学英语对话
A: Which classes have you completed? B: I have been taking classes for my General Education. A: Those are the only classes? B: Thats all I need to take right now. A: Why dont you take any other classes? B: Im just working on transferring right now. A
大学英语对话
A: What classes have you been taking? B: Ive been taking my GE classes. A: Thats it? B: Thats all that I need right now. A: Why havent you been taking any other classes? B: Im taking classes so that I can transfer soon. A: What classes have you taken
大学英语对话
India's Circus Owners Banned From Using Children Performers India's traditional traveling circuses remain widely popular across the country, although attendance has been falling in recent years. Despite their popularity, there have long been concerns
VOA标准英语2011年(七月)
Feed-in tariff program relies on funding from electricity users, not taxpayers Tom Banse | Olympia, Washington 23 March 2010 Proposed solar installation and wind turbine at Gas Works Park in Seattle. National and state governments around the world ha
VOA标准英语2010年(三月)
Scientists Help US Science Teachers in the Classroom Students in the United States in their last year of high school are not performing as well on the same science tests as their peers in many other countries. Educators say there should be more empha
VOA标准英语2011年(十一月)
By Barry Wood Pristina 04 March 2006 Top UN administrator Soren Jessen-Petersen, left, shakes hands with Agim Ceku head of the Kosovo Protection Corps The Serbian government Friday strongly criticized
2006年VOA标准英语（三月）
By Kent Klein White House 03 November 2009 German Chancellor Angela Merkel is in Washington to mark the 20th anniversary of the fall of the Berlin Wall by addressing a joint meeting of the U.S. Congress. Ms. Merkel met earlier with U.S. President Ba
VOA标准英语2009年(十一月)
By Steve Herman New Delhi 21 April 2008 Iranian President Mahmoud Ahmadinejad is expected to make a brief visit to India before the end of the month. It will be the first trip to the South Asian nation by an Iranian head of state in five years. Discu
VOA常速英语2008年（四月）
By Peter Fedynsky Washington, DC 17 April 2006 watch Resignation report Donald Rumsfeld (file photo) President Bush has rejected calls from a group of retired generals for the resignation of Defense S
2006年VOA标准英语（四月）
Many aspects, like its geological past, are a mystery. But some things we do know, this lonely planet has a strange sense of keeping time. Once you arrive, you have to reset your watch for a time zone like no other. It has such an unusual orbit and r
自然百科2012年
Reason/ you are going to go to Mercury as a travel destination would be this night sight view because it's going to be highly unique in the solar system. You have sodium thats atoms that are streaming off and giving enough to see yellow light, so you
自然百科2012年
And its here in a freezer that Messenger will encounter another puzzle: can ice exist on a planet so close to the sun? It's only when the first radar observations to the surface of Mercury were obtained back in the 90s that it was discovered that Mer
自然百科2012年
By June Soh Washington, DC 02 November 2006 watch Tribesman turned Teacher What makes you a better teacher is what you give to your students, says a Washington area social studies teacher who has tried to broaden his students' vision outside the cla
2006年VOA标准英语（十一月)
BERLIN, May 2 (Xinhua) -- Finnish(芬兰) soccer veteran defender Sami Hyypiae is going to quit his active career after the season 2010/2011 at his current club Leverkusen, aiming to start a professional coach schooling, Hyypiae announced on Monday.
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Kenyan Farmers Going Green As scientists and political leaders around the world grapple with the issue of climate change, many farmers are looking at technologies that rely on renewable energy for their operations. Farmers in Kenya are now using two
VOA标准英语2011年(十二月)
SCOTT SIMON, HOST: Next week, the NBA is putting on its big London game. The New York Knicks take on the Washington Wizards. But Enes Kanter of the Knicks won't be there. Mr. Kanter is Turkish and an outspoken critic of Turkish President Erdogan. He
2019年NPR美国国家公共电台1月
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